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13030233540 = 2235217170559
BaseRepresentation
bin11000010001010100…
…11001010111000100
31020122002200110002020
430020222121113010
5203141214433130
65552551043140
7640621105032
oct141052312704
936562613066
1013030233540
115587255355
1226379704b0
1312c872907c
148b8799552
15513e24e10
hex308a995c4

13030233540 has 24 divisors (see below), whose sum is σ = 36484654080. Its totient is φ = 3474728928.

The previous prime is 13030233511. The next prime is 13030233547. The reversal of 13030233540 is 4533203031.

It is a happy number.

It is a super-2 number, since 2×130302335402 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13030233540.

It is not an unprimeable number, because it can be changed into a prime (13030233547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108585220 + ... + 108585339.

It is an arithmetic number, because the mean of its divisors is an integer number (1520193920).

Almost surely, 213030233540 is an apocalyptic number.

13030233540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13030233540 is an abundant number, since it is smaller than the sum of its proper divisors (23454420540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13030233540 is a wasteful number, since it uses less digits than its factorization.

13030233540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217170571 (or 217170569 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

Adding to 13030233540 its reverse (4533203031), we get a palindrome (17563436571).

The spelling of 13030233540 in words is "thirteen billion, thirty million, two hundred thirty-three thousand, five hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 217170559 434341118 651511677 868682236 1085852795 1303023354 2171705590 2606046708 3257558385 4343411180 6515116770 13030233540